Pompey Academy made it back-to-back wins in the Youth Alliance League by easing past Cheltenham at Furze Lane.
Alfie Bridgman and Seok Jae Lee both came close to breaking the deadlock with efforts that flew narrowly wide midway through the first half.
But leading marksman Harry Anderson (pictured) did open the scoring on 27 minutes by touching home a Kristian Dawson strike.
And the same player doubled the advantage just before the interval after being teed-up by Seok Jae Lee.
Anderson then returned the favour early in the second period, drilling the ball into the box for Lee to smash into the tip corner.
Pompey kept pushing forward in search of more goals, but Harrison Brook and Dawson were both denied by good saves from the Robins keeper.
"Everyone’s bringing something to the table and we’re working hard as a team, while the lads are making good decisions."
Professional development phase coach Liam Daish said: “I’m really pleased. We’re starting to see a real identity about the way we play.
“Everyone’s bringing something to the table and we’re working hard as a team, while the lads are making good decisions.
“After going three goals up we were able to get some fresh legs on and give some other players a bit of game time.
“It’s a bit of a busy period for us and we’ve got another game on Tuesday, so – even though we don’t have a lot of options – we might give a few lads a breather.”
Pompey: Pitman (Manderson 76); Setters, Kaba, Cadman, Rew; Jewitt-White, Bell; Bridgman, Lee (Brook 55), Dawson; Anderson (Gifford 55)
Click here to see the latest Youth Alliance League table and academy player stats.